Home / 12,381.26-18,562.64-7,449.77

Finding the Fourth Proportional to 12,381.26, 18,562.64 and 7,449.77

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Solution

The fourth proportional to 12,381.26, 18,562.64 and 7,449.77 is: 11,169.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.26 : 18,562.64 = 7,449.77 : x
  2. Step 2: Convert to fraction form
    12,381.26/18,562.64 = 7,449.77/x
  3. Step 3: Cross multiply
    12,381.26x = 18,562.64 × 7,449.77
  4. Step 4: Simplify right side
    12,381.26x = 138,287,407.75
  5. Step 5: Solve for x
    x = 138,287,407.75/12,381.26
  6. Step 6: Final answer
    x = 11,169.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.